Explosion-engine.



G. R. PRICE.

EXPLOSION ENGINE.

APPLICATION 11.21) FEB. 28, 1910 Patented Dec. 20, 1910.

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Annmm v Wm G. R. PRICE.

EXPLOSION ENGINE Y APPLIUATIDN FILED mm. 28, 1910.

Patented Dec. 20, 1910.

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litmus UNITED sTATijfi XTENT or in on.

GUY R. PRICE, OF DETROIT, MICHIGAN.

EXPLOSION JENGIN combustion engines, and the object of this invention is to produce an engine having, a plurality of explosion chambers and pistons in one cylinder, one of the pistons being adapted to receive an ll'llPtllSG from an explosion in one explosion chamber so that all the pistons may acquire n'ioi'nentum for compressing the explosive charges in other explosion chambers.

A further object of this invention is to proridean engine requiring a. flywheel of minimum weight.

In the accompanying drawings of an ex plos'ion engine embodying my invention, Figures 1 and 2 are vertical cross sections on the lines 1 -1 and 2-2 of Fig. 3 respectively. Fig. 3 is a plan, and Fig. lis a horizontal cross section on the line 3--- 3 of Fi 1.

gimilar reference characters refer to like parts throughout the several views.

The usual four cycle explosion engine re quires a flywheel of considerable weight. because the momentum of the flywheel is depended upon to compress the explosive charge during the fourth cycle of n'iovement. The engine shown in the drawings is so con structed that the compression prior to the main explosion is effected by a preliminary explosion. While two pistons, and there fore, three explosion chambers are shown, the number may be varied as desired. The engine will have less power if the lower piston is omitted but the operation would be substantially the same.

The crank case l,-cranl-: shaft 2, gears 3 and 4, cam shaft 5, and flywl'ieel 6 are of any desirable design and form no part of this invention, and are therefore shown in a conventional manner. .The upper face of the crank case is properly machined to engage a machined flange 7 on the cylinder casting, the screws-8 being employed to hold the parts together. The cylinder casting is formed with an inner shell 9 or cylinder proper; an outer shell 10 or Water jacket; separated from. the inner shell by the passages 12; and the valve chambers 13, 14, 1.5

Specification of Letters Patent.

Application filed February 28. 1910.

from which pipes lutontod Doc. 20, 1910. Serial No. 546,281.

and Hi. cylinder head I? of any desired design (loses the upper end of the eylii'ider, within which are slidnble the pistons l8 and it) connected by the piston rod 20. A. connet-ting rod 21 extends between the pin 22 oi the piston and the crank pin 23. Either purl: ot' the bore oi the cylinder may be of greater diuuu-tt-r than the other, the difi'er em'e being just sutlicientto permit the auxiliary hood J-t- (.o be secured in position in any desirable nmnner, screw-threading being shown. This head is ')refera-bly formed of two disks 25, connected by a threaded ring 2U ha ing apertures 27 to permit. free How of the cooling liquid. Bushings28 may be screwed into the heads and removed and replaced as they become worn, thus insuring a. proper tit: around the piston red at all times. Ports 29 connect. the apertures 27 to the passages '12 in the wall of the cylinder.

()n the side of the engine, wherever practicable. may be mounted a earbureter 30, 31. extend to the ports 32, 32-3 and 5-H. Mounted in the vtll've chamber 16 (Fig. 2) is a guide 35 for the stem 36 ot the valve 37. A light spring 38 normally holds'the valve on its seat. A port; 39 conno. to the engine and a spark plug 40 will cause an explosion at. the proper time. This valve will open against the pull of the spring at. each alternate upward movement of the piston 18., cover ell closes the opening wherethrough the spring may be inspected. and a head closes the bore of the chamber.

The valve chamber 15, (Fig. l) is preferably bored from both ends and fitted with guides 4-2 and 43 for the yalve stem 44, preferably in two pieces joined by the coupling -l5. Syn-hugs 46 on the stem normally hold the valves 47 and 48 on their seats.- On

the intake stroke these valves are lifted from their seats and permit. the explosive vapor to "enter the cylinder through. the ports 49 and 50. A small roller fil is preferably mounted at the lower end of the stem 44 and rides on the cam-fit on the cam-shaft 5. The lower end of this. valve chamber is fitted 'With a guide-head 52 head 53. permit the partsto be assembled. A sparkplug 55 is secured adjacent the port 49, preferably in the head sparkplug 55 can be screwed into the wall of the chamber adjacent. the port 50.

The exhaust. of the burned gases may be and at. the upper end isa 53, while the second A cover 54 may be removed to cont rolled by automatic or ram -.o n.rated valves. shown titted with upper head 60, guides til, (i2 and (iii for the stem tit, and lower guidehead (35. A roller ()(3 at the lower end of the stem rests on the cam (57 and the two parts of the stenrare shown joined by the coupling (38. The two valves (it) and T0 are held on their seats by the springs Tl. When the valves are opened by the cam 0?, the burned gases will pass from the 'liinler by means of the ports 4-9 and 50 into the chamber and out through the exhaust pipes 74-. Uponrenioving the cover 75 aeress is obtained to the stem 64 and coupling [38.

In Fig. 1 is shown the automatic exhaust mechanism of the intermediate explosion chamber. In the valve chamber 13 is mounted a guide cylinder 80, and a guide 81, and the ends are closed by .the heads 82 and 875.

A valve stem 84 has a valve at its lower end, normally held on its seat by the spring 86. At the upper end is a piston 87, while a collar 88, intermediate the ends has a tinger 89 engaged by a lip 90 at the upper endof the spring 91. The exhaust pipe is marked 92, and access to the springs is obtainedby removin the plate 93. The upward movement 0 the piston 18 under the force ofthe explosion between this piston and the head 24 compresses the charge above the piston, but the stiffness of the spring 86, aided by the upward ressure of the lip 90 on the finger 89 is so cient to hold the piston 87 against this ressure. But when an explosion follows 'tie compression of the charge above the piston 18, the pressure of the gases is sufficient to force down the piston 87, the finger 89 forcing past the lip 90, and the valve 85 leaving its seat. The valve 85 will therefore perinit. the waste gases between the head 24 and piston 18 to pass out during this'dow nward movement of the pis ton, and this valve will be held open so long as the pressure on the piston 87 is greater than the upward pressure-0f the spring 86 and the resisting pressure of the lip.90 on the finger 89. \Vhen the down stroke of the piston iscompleted, and the exhaust valve 69 opened, the pressure on the piston 87 will end and the spring86 will press the valve 85 onto its port.

The two pistons 18 and 19 on the same )lS ton rod are forced down by the simultaneous explosions of the charges of explosive vapors immediately above them. The valves 47, 48, 69 and 70 have the usual. movements of valves of four cycle engines. The explosion between the piston18 and the head 24 occurs at the time the pistons move 11 ward to compress the explosive cl-iarges. s the flywheels of four-cycle engines are usually made heavy in order to store energy sufficiei'it to accomplish such compression, much weight can be saved as just this step In l i Z the valve chamber It is is now taken care of by the explosion heneath the piston 18.

l Many changes in the details andpropor-- tions can be made by those skilled in engine designing without departing from the spirit of my invention Thus the valve mechanisms shown ma be interchanged or duplicated or replace by others.

The operation of the engine is as follows. The drawings show the parts just as the exploded vapor between the piston 18 and the head 24 is forcing up the pistons and thus compressing the charges above the pistons. At the end of the upward stroke, the charges will be exploded and the pistons forced down, and at the same time, the. valve 85 will be moved off its seat to permit the intermediate explosion chamber to be scavenged. Next the pistons go up o scavenge the gases of explosion and draw in fresh vapor for the intermediate explosion chamber. On the next down stroke, fresh explosive vapor is taken in above the pistons, at the end of which strolge the explosion between the piston 18 and head 2st furnishes power to compress the main charges.

Having now explained my improvements, what I claim as my invention and desire to secure by Letters Patent is 1. In an explosion engine, the combination of a cylinder, an upper head for the same, an intermediate head having a censaid opening, a piston mounted on'the rod on either side ofsaid intermediate head, said cylinder having ports to admit explosive vapor at each side of the intermediate head and adjacent thenpper head, and valves to control the admission of said vapor.

diate head and pistons within said cylinder forming three explosion chambers, and valves to .control the passage of the vapor to said chambers.

3., In an explosion engine, the combination of a cylinder having a head at one end of the same, an intermediate head and pistons within said cylinder forming three explosion chambers, and means for effecting the explosions in said chambers.

4. In an explosion engine, the combination of a cylinder having exhaust ports, a head at one end of the cylinder, an intermediate head and pistons within'said cylinder forming three explosive chambers, a

mcdiato chamber; and means operable by the pressure in' an adjacent chamber to open said valve.

.5. In an explosion engine, the combination' of a cylinder, an up er head for the same, an intermediate hea having a central tral opening, a piston rod slidable throughj 2. In an explosion engine, the combination of a cylinder having intake ports, a head at one end of the same, an intermevalve to permit the exhaust from the -intertion of a cylinder having intake and eyhanst ports, a head at one end of the same, an

1 intermediate head and pistons within said cylinder forming three explosion chambers, valves to control the passage of the vapor to said chambers, and a second series of valves to control the escape of the burned l gases.

In testimony whereofI have signed this specification in the presence of two snbscribing Witnesses.

GUY R. PRICE. In presence of- J. H. DOUGHERTY, MY TL L. Rose. 

